Work for one of our portfolio companies

Mobile (React Native) Engineer



Software Engineering
New York, NY, USA
Posted on Monday, April 15, 2024

Castle is the all-in-one payment platform that saves homeowners time and money.

  • Homeowners use Castle to pay for and track all of their home expenses in one place. Castle then monitors those transactions for savings opportunities, and provides end-to-end support to claim tax credits and rebates for any eligible expenses. The average Castle customer saves more than $10k on their home.

  • Realtors, property managers, and home service professionals work with Castle to deliver the next level of premium service to their customers. Castle’s on-call concierge assists homeowners with all of their home finance questions and needs (from account set-up to tax credit eligibility), making homeowners happier and saving home service professionals time to focus on their core business.

  • Castle’s founding team helped build and sell the largest AI company (at the time of exit) to S&P Global in 2018; graduated from Harvard and MIT, and renovated six homes during the Covid-19 pandemic. Castle’s founding investors have backed companies like Airbnb, Dropbox, Facebook, Pinterest and Venmo.

As the founding Mobile/Frontend Engineer, you’ll be responsible for building out and maintaining our existing React Native app for iOS devices. You will work closely with the founders and engineering team to ensure that we provide a positive experience for users worthy of growth through word-of-mouth.

What you'll need:

  • Expertise in react native, iOS, and Javascript

  • Experience with frontend infrastructure

  • Experience with API design


  • Experience using Expo and Apple’s App Store

  • Experience with android, frontend infrastructure, and/or backend development

  • Experience in fintech

  • Experience mentoring engineers or leading teams/orgs